package com.cencat.order.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cencat.order.dto.RouteDTO;
import com.cencat.order.entity.Route;
import com.cencat.order.mapper.RouteMapper;
import com.cencat.order.service.RouteService;
import com.cencat.order.vo.RouteVO;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 路线业务逻辑实现类
 * 
 * @author cencat
 * @date 2024-01-20
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class RouteServiceImpl extends ServiceImpl<RouteMapper, Route> implements RouteService {

    private final RouteMapper routeMapper;

    @Override
    public IPage<RouteVO> getRoutePage(Page<RouteVO> page, String routeName, String routeCode,
                                      String startLocation, String endLocation, Integer routeStatus,
                                      Integer priority, LocalDateTime startTime, LocalDateTime endTime) {
        log.info("分页查询路线列表，参数：routeName={}, routeCode={}, startLocation={}, endLocation={}, routeStatus={}, priority={}, startTime={}, endTime={}",
                routeName, routeCode, startLocation, endLocation, routeStatus, priority, startTime, endTime);
        
        IPage<RouteVO> result = routeMapper.selectRoutePage(page, routeName, routeCode, startLocation,
                endLocation, routeStatus, priority, startTime, endTime);
        
        log.info("分页查询路线列表完成，总数：{}", result.getTotal());
        return result;
    }

    @Override
    public RouteVO getByRouteCode(String routeCode) {
        log.info("根据路线编号查询路线信息，routeCode={}", routeCode);
        
        if (!StringUtils.hasText(routeCode)) {
            log.warn("路线编号不能为空");
            return null;
        }
        
        RouteVO result = routeMapper.selectByRouteCode(routeCode);
        log.info("根据路线编号查询路线信息完成，result={}", result != null ? "找到" : "未找到");
        return result;
    }

    @Override
    public List<RouteVO> getByLocation(String startLocation, String endLocation, Integer routeStatus,
                                      LocalDateTime startTime, LocalDateTime endTime) {
        log.info("根据起终点查询路线列表，startLocation={}, endLocation={}, routeStatus={}, startTime={}, endTime={}",
                startLocation, endLocation, routeStatus, startTime, endTime);
        
        List<RouteVO> result = routeMapper.selectByLocation(startLocation, endLocation, routeStatus, startTime, endTime);
        log.info("根据起终点查询路线列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public List<RouteVO> getByStatus(Integer routeStatus, Integer priority, LocalDateTime startTime, LocalDateTime endTime) {
        log.info("根据状态查询路线列表，routeStatus={}, priority={}, startTime={}, endTime={}",
                routeStatus, priority, startTime, endTime);
        
        List<RouteVO> result = routeMapper.selectByStatus(routeStatus, priority, startTime, endTime);
        log.info("根据状态查询路线列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public List<RouteVO> getByPriority(Integer priority, Integer routeStatus, LocalDateTime startTime, LocalDateTime endTime) {
        log.info("根据优先级查询路线列表，priority={}, routeStatus={}, startTime={}, endTime={}",
                priority, routeStatus, startTime, endTime);
        
        List<RouteVO> result = routeMapper.selectByPriority(priority, routeStatus, startTime, endTime);
        log.info("根据优先级查询路线列表完成，数量：{}", result.size());
        return result;
    }

    @Override
    public Map<String, Object> getRouteStatistics(Integer routeStatus, Integer priority,
                                                 LocalDateTime startTime, LocalDateTime endTime) {
        log.info("查询路线统计信息，routeStatus={}, priority={}, startTime={}, endTime={}",
                routeStatus, priority, startTime, endTime);
        
        Map<String, Object> result = routeMapper.selectRouteStatistics(routeStatus, priority, startTime, endTime);
        
        log.info("查询路线统计信息完成");
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean createRoute(RouteDTO routeDTO) {
        log.info("创建路线信息，routeDTO={}", routeDTO);
        
        if (routeDTO == null) {
            log.warn("路线信息不能为空");
            return false;
        }
        
        // 检查路线编号是否已存在
        if (StringUtils.hasText(routeDTO.getRouteCode())) {
            RouteVO existingRoute = routeMapper.selectByRouteCode(routeDTO.getRouteCode());
            if (existingRoute != null) {
                log.warn("路线编号已存在：{}", routeDTO.getRouteCode());
                return false;
            }
        }
        
        Route route = new Route();
        BeanUtils.copyProperties(routeDTO, route);
        route.setCreateTime(LocalDateTime.now());
        route.setUpdateTime(LocalDateTime.now());
        route.setDeleted(false);
        
        boolean result = save(route);
        log.info("创建路线信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateRoute(Long routeId, RouteDTO routeDTO) {
        log.info("更新路线信息，routeId={}, routeDTO={}", routeId, routeDTO);
        
        if (routeId == null || routeDTO == null) {
            log.warn("路线ID和路线信息不能为空");
            return false;
        }
        
        Route existingRoute = getById(routeId);
        if (existingRoute == null) {
            log.warn("路线不存在：{}", routeId);
            return false;
        }
        
        Route route = new Route();
        BeanUtils.copyProperties(routeDTO, route);
        route.setId(routeId);
        route.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(route);
        log.info("更新路线信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateRouteStatus(Long routeId, Integer routeStatus, String statusRemark) {
        log.info("更新路线状态，routeId={}, routeStatus={}, statusRemark={}", routeId, routeStatus, statusRemark);
        
        if (routeId == null || routeStatus == null) {
            log.warn("路线ID和状态不能为空");
            return false;
        }
        
        boolean result = routeMapper.updateRouteStatus(routeId, routeStatus, statusRemark) > 0;
        log.info("更新路线状态完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateRoutePriority(Long routeId, Integer priority, String priorityRemark) {
        log.info("更新路线优先级，routeId={}, priority={}, priorityRemark={}", routeId, priority, priorityRemark);
        
        if (routeId == null || priority == null) {
            log.warn("路线ID和优先级不能为空");
            return false;
        }
        
        boolean result = routeMapper.updateRoutePriority(routeId, priority, priorityRemark) > 0;
        log.info("更新路线优先级完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateRouteCost(Long routeId, BigDecimal estimatedCost, BigDecimal actualCost, String costRemark) {
        log.info("更新路线成本，routeId={}, estimatedCost={}, actualCost={}, costRemark={}",
                routeId, estimatedCost, actualCost, costRemark);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return false;
        }
        
        boolean result = routeMapper.updateRouteCost(routeId, estimatedCost, actualCost, costRemark) > 0;
        log.info("更新路线成本完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean updateRouteTimeWindow(Long routeId, LocalTime startTimeWindow, LocalTime endTimeWindow,
                                       String timeWindowRemark) {
        log.info("更新路线时间窗口，routeId={}, startTimeWindow={}, endTimeWindow={}, timeWindowRemark={}",
                routeId, startTimeWindow, endTimeWindow, timeWindowRemark);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return false;
        }
        
        boolean result = routeMapper.updateRouteTimeWindow(routeId, startTimeWindow, endTimeWindow, timeWindowRemark) > 0;
        log.info("更新路线时间窗口完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean batchUpdateRouteStatus(List<Long> routeIds, Integer routeStatus) {
        log.info("批量更新路线状态，routeIds={}, routeStatus={}", routeIds, routeStatus);
        
        if (routeIds == null || routeIds.isEmpty() || routeStatus == null) {
            log.warn("路线ID列表和状态不能为空");
            return false;
        }
        
        boolean result = routeMapper.batchUpdateRouteStatus(routeIds, routeStatus) > 0;
        log.info("批量更新路线状态完成，result={}", result);
        return result;
    }

    @Override
    public Map<String, Object> planOptimalRoute(String startLocation, String endLocation,
                                               Map<String, Object> constraints, String optimizationGoal) {
        log.info("路线规划与优化，startLocation={}, endLocation={}, constraints={}, optimizationGoal={}",
                startLocation, endLocation, constraints, optimizationGoal);
        
        if (!StringUtils.hasText(startLocation) || !StringUtils.hasText(endLocation)) {
            log.warn("起点和终点不能为空");
            return Map.of("success", false, "message", "起点和终点不能为空");
        }
        
        // 这里应该调用路线规划算法，暂时返回模拟数据
        Map<String, Object> result = Map.of(
                "success", true,
                "routeId", System.currentTimeMillis(),
                "distance", 15.5,
                "estimatedTime", 30,
                "estimatedCost", new BigDecimal("25.50"),
                "waypoints", List.of(startLocation, "中转点1", "中转点2", endLocation)
        );
        
        log.info("路线规划与优化完成");
        return result;
    }

    @Override
    public Map<String, Object> analyzeRouteFeasibility(Long routeId, Map<String, Object> analysisParameters) {
        log.info("路线可行性分析，routeId={}, analysisParameters={}", routeId, analysisParameters);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return Map.of("success", false, "message", "路线ID不能为空");
        }
        
        Route route = getById(routeId);
        if (route == null) {
            log.warn("路线不存在：{}", routeId);
            return Map.of("success", false, "message", "路线不存在");
        }
        
        // 这里应该进行实际的可行性分析，暂时返回模拟数据
        Map<String, Object> result = Map.of(
                "success", true,
                "feasible", true,
                "feasibilityScore", 85,
                "riskLevel", "低",
                "recommendations", List.of("建议在高峰期避开主干道", "可考虑增加备选路线")
        );
        
        log.info("路线可行性分析完成");
        return result;
    }

    @Override
    public Map<String, Object> assessRouteRisk(Long routeId, List<String> riskFactors) {
        log.info("路线风险评估，routeId={}, riskFactors={}", routeId, riskFactors);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return Map.of("success", false, "message", "路线ID不能为空");
        }
        
        // 这里应该进行实际的风险评估，暂时返回模拟数据
        Map<String, Object> result = Map.of(
                "success", true,
                "overallRisk", "中等",
                "riskScore", 65,
                "riskDetails", Map.of(
                        "trafficRisk", 70,
                        "weatherRisk", 30,
                        "roadConditionRisk", 50
                ),
                "mitigationSuggestions", List.of("避开高峰时段", "关注天气变化", "准备备选路线")
        );
        
        log.info("路线风险评估完成");
        return result;
    }

    @Override
    public Map<String, Object> calculateRouteCost(Long routeId, Map<String, Object> costParameters) {
        log.info("路线成本计算，routeId={}, costParameters={}", routeId, costParameters);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return Map.of("success", false, "message", "路线ID不能为空");
        }
        
        // 这里应该进行实际的成本计算，暂时返回模拟数据
        Map<String, Object> result = Map.of(
                "success", true,
                "totalCost", new BigDecimal("45.80"),
                "fuelCost", new BigDecimal("25.30"),
                "tollCost", new BigDecimal("15.00"),
                "laborCost", new BigDecimal("5.50"),
                "costBreakdown", Map.of(
                        "fuel", "55%",
                        "toll", "33%",
                        "labor", "12%"
                )
        );
        
        log.info("路线成本计算完成");
        return result;
    }

    @Override
    public Map<String, Object> estimateRouteTime(Long routeId, Map<String, Object> timeParameters) {
        log.info("路线时间预估，routeId={}, timeParameters={}", routeId, timeParameters);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return Map.of("success", false, "message", "路线ID不能为空");
        }
        
        // 这里应该进行实际的时间预估，暂时返回模拟数据
        Map<String, Object> result = Map.of(
                "success", true,
                "estimatedTime", 45,
                "minTime", 35,
                "maxTime", 60,
                "timeBreakdown", Map.of(
                        "driving", 35,
                        "loading", 5,
                        "unloading", 5
                ),
                "trafficImpact", "中等"
        );
        
        log.info("路线时间预估完成");
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean softDeleteRoute(Long routeId) {
        log.info("软删除路线信息，routeId={}", routeId);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return false;
        }
        
        Route route = new Route();
        route.setId(routeId);
        route.setDeleted(true);
        route.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(route);
        log.info("软删除路线信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean batchSoftDeleteRoutes(List<Long> routeIds) {
        log.info("批量软删除路线信息，routeIds={}", routeIds);
        
        if (routeIds == null || routeIds.isEmpty()) {
            log.warn("路线ID列表不能为空");
            return false;
        }
        
        List<Route> routes = routeIds.stream()
                .map(id -> {
                    Route route = new Route();
                    route.setId(id);
                    route.setDeleted(true);
                    route.setUpdateTime(LocalDateTime.now());
                    return route;
                })
                .collect(Collectors.toList());
        
        boolean result = updateBatchById(routes);
        log.info("批量软删除路线信息完成，result={}", result);
        return result;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean restoreRoute(Long routeId) {
        log.info("恢复已删除的路线信息，routeId={}", routeId);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return false;
        }
        
        Route route = new Route();
        route.setId(routeId);
        route.setDeleted(false);
        route.setUpdateTime(LocalDateTime.now());
        
        boolean result = updateById(route);
        log.info("恢复已删除的路线信息完成，result={}", result);
        return result;
    }

    @Override
    public List<Map<String, Object>> getRouteChangeHistory(Long routeId, LocalDateTime startTime, LocalDateTime endTime, Integer limit) {
        log.info("查询路线变更历史，routeId={}, startTime={}, endTime={}, limit={}",
                routeId, startTime, endTime, limit);
        
        if (routeId == null) {
            log.warn("路线ID不能为空");
            return List.of();
        }
        
        List<Map<String, Object>> result = routeMapper.selectRouteChangeHistory(routeId, startTime, endTime, limit);
        log.info("查询路线变更历史完成，数量：{}", result.size());
        return result;
    }
}